That's the first correct answer I've seen to the question above  

Seriously, DeepOnion is a great project and I'd happily carry this signature for a while but let's not fool ourselves here. Most people still have the signature because they get paid for it and there's nothing wrong with that. Most of us have promoted DeepOnion more than we've gotten paid for it (except, of course, from the early airdrop participants who certainly got more than they contributed for, unless they additionally contributed to the project using means other than just having a signature) and we have done so gladly. With joy and hope for the project. However, the climate that bitcointalk cultivates is a forum where your signature has value, so most people who have put a signature of any kind have done it in order to get some kind of reward.

I don't want to judge people who have kept or have replaced their DeepOnion signature for monetary reasons. I'm pretty sure that the DeepOnion team is well aware of how the world works and that people need money. It's other behaviors that should concern us, like for example people who pretend to be friends and fans of DeepOnion and then leave the project when the airdrops run out.

PS: To the people who answered "we keep the signature to support the project": It was a simple question, and the answer is, "yes, there are still benefits to holding the DeepOnion signature, as long as you register on VoteCentral and have a minimum of 50 Onions on your wallet. You can help promote DeepOnion and earn Onions on a bi-weekly basis". Let's not act like we couldn't use more people to promote our coin.

Yeah, I see, there is no point to do it on old code and they re-do on the new one. Thx.

DeepSend is a privacy technology, we better work on it at new code base than old one.

Thanks for shedding more light on the issue, I don't know there is anything like VoteCentral. It is a good way to keep the whole community together and to incentive people is a good way to go IMO.

Indeed, and on top of that, people who care about the project can also create proposals for its improvement through VoteCentral so the community can vote on them. I forgot to mention that part because it was not relevant to what you had asked but it's one of the main reasons VoteCentral exists (and the reason for its name). Truly, VoteCentral is a great feature, on of DeepOnion's best.

In the long run, it is necessary to upgrade the code base. Many things and community discussions are good. I think the point is still privacy. Only in this way can we guarantee safety