So for example, you could have rewards for solving blocks, but the also have another smaller reward that goes to anyone who is running a full node. this would create an incentive to people to keep their nodes runing even if their device has low hashpower
right now, im thinking about designing an altcoin that uses both PoW to mine and then uses something like PoS, where everytime a block gets enough confirmations to be added to the blockchain, one of the nodes that was online when the block was made, is picked at random and given a small reward (although nodes with higher stake would have better chance of winning). maybe it should be called "proof of node"? People mining this coin would get to choose between PoW, which requires hashpower, or PoN, which doesnt
are there any problems with this idea?
EDIT: changed incorrect terminology
Rewarding people just because they are online is not a very good idea imo and not a new idea.
But the title says '... giving rewards for other tasks' and it is what I strongly support despite the fact that apparently the OP is not in line with the title
Although I can confirm that 'being on-line' is sort of a 'task' but it is a very light one and deserves almost zero reward.
Cryptocurrency and blockchain technology are just starting to mature and I think the protocol should become more sophisticated and different 'task's should be necessary to maintain the network and it will lead to a more sophisticated reward system, obviously.
As of 'proof of stake', despite its recent popularity and acceptance in the community, I think it is one of the most absurd ideas in the cryptocurrency ever. Paying interest to coin holders (being 'on-line' or not)? poof ...
For example, doubling the coins stored in the wallets (99% of wallets remain on-line when you incentivize this by paying interest) has no effect other than halving the price, and doubling the transaction volume.
As I said, you need more sophistication to have more efficiency in terms of decentralization and performance, but the trend in the community is keeping things simple .... why? They believe in magic.