Hello BitcoinTalk!
I have around 15BTC ready to invest...I have no more outstanding loans and my company is set to begin development of our new wallet.
I don't want to just leave the 15BTC sitting there, so do any of you have ideas on where I might be able to invest it?
If so, please post below

Thank you!
If your current "btc is on the safe storage", I just thinks leave it in place, and wait for the price spike to occur.
According to the scattered news, btc will implement a contract-smart system as reported by a site
https://www.coindesk.com/smart-contracts-bitcoin-lightnings-tadge-dryja-working/ I really hope: after btc, implement a contract-smart system I think there will be a lot of speculators playing here, and this will have a positive impact on the btc price increase, and the bitcoin will return at the height of the glory we expected.
But is that really such a promising "innovation"? Those who have been using the Ethereum smart contracts would not have to change a platform as stable as ethereum to go to the highly volatile and divided Bitcoin. I really do not think it will impact so much in the bitcoin as long as problems of first priority are not solved.
Therefore, going with ethereum is the best investment.