Ending a PhD thesis by saying "there is more to do"
I am ending the conclusion of my PhD thesis by saying something like this (not even remotely in these words):
There was a lot of work gone in the thesis, yada yada yada, however there is room for more, such as having this and that.
I have a feeling that ending the thesis with "what's missing" leaves a negative impression on the reader, although the thesis addresses an issue that has never been addressed before, so the proposed solutions are novel.
I decided to finish with a sentence that reminds the reader that the work is novel and leaves the impression that this is going to pave the way forward. The sentence that immediately came to my mind is:
This Thesis is only the beginning.
But that sounds really cheesy. Like those movies that show "The End" and then suddenly a question mark is added.
My question is, what alternative sentence can I use to convey what I'm trying to say (in the context of a PhD thesis)?
If it helps, this is the actual last paragraph:
The proposed software architectures have been iteratively improved upon based on past experiences, case studies, and peer reviews. Nevertheless, no software architecture ever reaches perfection. Potential future directions include higher reconfigurability of the robot skin, allowing feedback from user applications to the robot skin, or real-time transfer of data between the host PC to other processing units and distributed tactile processing. Compliance to safety standards is another possible research direction. This Thesis is only the beginning.